diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Revision history for pms-infra-cmdrun
 
+## 0.1.1.0 -- 2026-07-05
+
+* Changed the method for retrieving command execution results.
+
 ## 0.1.0.0 -- 2026-06-15
 
 * Added pms-infra-agent-server: TCP server listen/accept functionality for AI agents.
diff --git a/pms-infra-cmdrun.cabal b/pms-infra-cmdrun.cabal
--- a/pms-infra-cmdrun.cabal
+++ b/pms-infra-cmdrun.cabal
@@ -20,7 +20,7 @@
 -- PVP summary:     +-+------- breaking API changes
 --                  | | +----- non-breaking API additions
 --                  | | | +--- code changes with no API change
-version:            0.1.0.0
+version:            0.1.1.0
 
 -- A short (one-line) description of the package.
 synopsis:           pms-infra-cmdrun
diff --git a/src/PMS/Infra/CmdRun/DS/Core.hs b/src/PMS/Infra/CmdRun/DS/Core.hs
--- a/src/PMS/Infra/CmdRun/DS/Core.hs
+++ b/src/PMS/Infra/CmdRun/DS/Core.hs
@@ -154,6 +154,11 @@
 
 -- |
 --   
+-- On Windows, .bat scripts call "chcp 65001" at their start to switch the
+-- active code page to UTF-8. This ensures that both built-in commands
+-- (echo, move, copy, etc.) and external commands (tree.com, xcopy.exe, etc.)
+-- emit UTF-8 output. The raw ByteString received from the process is therefore
+-- UTF-8 on all platforms, and decodeUtf8With lenientDecode is used uniformly.
 cmdRunTask :: STM.TQueue DM.McpResponse -> DM.DefaultCmdRunCommandData -> String -> Int -> IO ()
 cmdRunTask resQ cmdDat cmd tout = flip E.catchAny errHdl $ do
   hPutStrLn stderr $ "[INFO] PMS.Infra.CmdRun.DS.Core.work.cmdRunTask.run cmd: " ++ cmd
diff --git a/src/PMS/Infra/CmdRun/DS/Utility.hs b/src/PMS/Infra/CmdRun/DS/Utility.hs
--- a/src/PMS/Infra/CmdRun/DS/Utility.hs
+++ b/src/PMS/Infra/CmdRun/DS/Utility.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE CPP #-}
 {-# LANGUAGE OverloadedStrings #-}
 
 module PMS.Infra.CmdRun.DS.Utility where
@@ -145,9 +146,15 @@
   return (hout, herr, ph)
 
 
+-- | Create a shell process for the given command string.
+-- On Windows, the .bat scripts are expected to call "chcp 65001" at their
+-- start to switch the code page to UTF-8, so that both built-in commands
+-- (echo, move, copy, etc.) and external commands (tree.com, xcopy.exe, etc.)
+-- emit UTF-8 output that can be decoded uniformly with decodeUtf8With.
 createShellProcess :: String -> IO (Handle, Handle, Handle, ProcessHandle)
 createShellProcess cmd = do
-  (mHin, mHout, mHerr, ph) <- createProcess (shell cmd) {
+  let procSpec = shell cmd
+  (mHin, mHout, mHerr, ph) <- createProcess procSpec {
       std_in = CreatePipe
     , std_out = CreatePipe
     , std_err = CreatePipe
diff --git a/test/PMS/Infra/CmdRun/App/ControlSpec.hs b/test/PMS/Infra/CmdRun/App/ControlSpec.hs
--- a/test/PMS/Infra/CmdRun/App/ControlSpec.hs
+++ b/test/PMS/Infra/CmdRun/App/ControlSpec.hs
@@ -224,3 +224,5 @@
 
         isError res   `shouldBe` True
         secondText res `shouldContain` "timeout occurred."
+
+